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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 08/18/43 <br /> Date Received: 08/06103 <br /> Project: 6447.001 (U.S. CAN), F&131 305040 <br /> QUALITY ASSURANCE RESULTS FOR THE .ANALYSIS OF WATER <br /> SAMPLES FOR VOLATILES BY EPA METHOD 8260B <br /> Laboratory Code: 305040-03 (Duplicate) <br /> Relative Percent <br /> Reporting Sample Duplicate Difference <br /> A-nalyto Units Result Result (Limit 20 <br /> Benzene ggJL (ppb) <1 <1 nm <br /> Toluene pg/1- (ppb) <1 E1 nm <br /> Ethylbenzene uglL (ppb) <1 <1 nm <br /> m-Xylene }Lg1L (ppb) <1 <1 nm <br /> o-Xylene pglL (ppb) <1 <1 nm <br /> Laboratory Code: Laboratory Control Sample <br /> Percent Percent <br /> Reporting Spike Recovvey Recovery Acceptance RPD <br /> Analyte Units Level LCS LCSD Criteria Limit 20) <br /> Benzene gg/L (ppb) 50 99 102 74.130 3 <br /> Toluene µglL (ppb) 50 98 102 70-130 3 <br /> Ethylbenzene gg/L (ppb) 50 96 101 70-130 4 <br /> m-Xylene gglL (ppb) 50 101 106 70.130 5 <br /> o-Xylene gglL (ppb) 50 102 105 70.130 4 <br /> nm -The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of <br /> the RPD is not applicable. <br /> 15 <br />